US4574034A - Method for monitoring the reversal system of coke oven batteries - Google Patents

Method for monitoring the reversal system of coke oven batteries Download PDF

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Publication number
US4574034A
US4574034A US06/580,790 US58079084A US4574034A US 4574034 A US4574034 A US 4574034A US 58079084 A US58079084 A US 58079084A US 4574034 A US4574034 A US 4574034A
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US
United States
Prior art keywords
reversal
waste heat
pressure
air
coke oven
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/580,790
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English (en)
Inventor
Otto Lemke
Dieter Stalherm
Reimer Haack
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carl Still GmbH and Co KG
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Carl Still GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Carl Still GmbH and Co KG filed Critical Carl Still GmbH and Co KG
Assigned to FIRMA CARL STILL GMBH & CO., KG. reassignment FIRMA CARL STILL GMBH & CO., KG. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: HAACK, REIMER, LEMKE, OTTO, STALHERM, DIETER
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B21/00—Heating of coke ovens with combustible gases
    • C10B21/10—Regulating and controlling the combustion
    • C10B21/14—Devices for reversing the draught
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

Definitions

  • This invention relates in general to coke ovens and in particular to a new and useful method and apparatus for monitoring the reversal system of a regenerative coke oven operation.
  • the invention relates to a method of monitoring the reversal equipment in coke oven batteries.
  • the reversal system gas cocks, waste heat valves, and air valves
  • the arrangement is such that the gas cocks, air valves, and waste heat discs of each coke oven are secured to linkages extending the entire length of the battery.
  • the gas cocks are usually coupled to their linkage through cock wrenches, and the air valves and waste heat valves through respective chains.
  • the linkages operate under a hydraulic control and ensure the reversing of the regenerative heating mode of the coke ovens.
  • the linkages are usually monitored for the correct position of limit switches of the linkages, for a break in the linkage, and for the necessary pressure in the hydraulic mechanism. Only a general checking of the linkages of a coke oven battery is possible. Ruptures of the individual chains or cock wrenches cannot be detected.
  • the present invention is directed to a system of monitoring the reversal equipment, particularly individual monitoring of the air valves, waste heat discs, and gas cocks, at the individual coke ovens, operating in a simple and reliable manner and usable for any kind of coke oven battery.
  • the monitoring of the reversal system of the regenerative operation of coke oven batteries is accomplished by measuring and registering on each of the coke ovens of a coke oven battery selectively at least one of the temperature, the flow rate of the fluids flowing into and out of the coke oven, the combustion air and gas and waste gas flow, etc.
  • the measured values are compared with desired values corresponding to a setting of the reversal equipment under predetermined optimum operational conditions.
  • the system is such that upon undue deviation of the measured values from the desired values, a control is operated to make a change in the operation such as to actuate the system for selecting any gas deficiency.
  • the apparatus may comprise means for measuring for example the temperature in each of a waste gas supply line and a bridge gas supply line and for measuring the values of temperature and evaluating the measured values so as to provide for a reversal control when the values deviate beyond a predetermined situation.
  • waste heat valves of a coke oven battery The general purpose of waste heat valves of a coke oven battery is to control, in a regenerative cycle, the air or lean gas supply into the respective oven and the waste gas escape from the oven.
  • the air valves, gas cocks, and waste heat discs thus periodically vary their positions from open to closed and vice versa. Relatively accurately determinable temperatures are associated with the individual fluids. Under normal operating conditions, temperatures below 100° C. may be assumed for the inflowing combustion air and the supplied lean gas, and temperatures above 200° C. for the outflowing waste gas.
  • the desired values are to be adjusted within these ranges.
  • a temperature not below or above the indicated limits would be considered an undue deviation from the desired value.
  • suitable measuring devices such as thermocouples, resistance thermometers, contact thermometers, temperature switches, etc.
  • the temperature in the waste heat valve can be measured and the measuring signals transmitted to a central control station where the values are registered and compared with the desired values corresponding to the setting of the reversal equipment.
  • an alarm signal is automatically actuated inducing the necessary safety measure, for example causing an automatic actuation of a gas deficiency safety device.
  • a single monitoring element is thus sufficient for covering two control elements, such as an air valve and a waste heat disc, or a lean gas cock and a waste heat disc.
  • the invention may, of course, also be applied to systems where separate ways are provided for the air or gas supply, and the waste gas discharge.
  • Another advantage of the invention method is that these continual temperature measurements give information on the heating condition of the individual heating walls.
  • Both the temperature and the flow monitoring employ simple and reliable mechanisms which can be installed at relatively low cost. Neither soiling, nor the above-mentioned movements of the masonry can affect this measuring method. The needed measuring devices have a long life and do not require maintenance.
  • the reversal system may advantageously measure fluid pressure in the supply lines to the hydraulic cylinders for actuating individual reversal linkages and for centrally registering these values. The values are then compared to the desired values corresponding to the setting of the reversal equipment and upon undue deviation from the desired values, signals for taking necessary safety measures or opposite measures are automatically released.
  • suitable pressure gauges such as contact manometers, electrical pressure indicators or switches, are mounted in the oil supply line to the working cylinder.
  • a pressure which is adjustable to correspond to the breaking load of the cock wrench, again an alarm is delivered corresponding to the reversal cycle or interrupting this cycle.
  • This kind of monitoring has the particular advantage of being capable of releasing an alarm signal even before a failure of the cock wrench. Extended repair work may thus be avoided.
  • the entire monitoring equipment may be self-monitoring, i.e. automatically deliver a disturbance signal after a failure of a measuring station.
  • the invention provides an improved method and apparatus for easily effecting the operation of a regenerative coke oven to effect the necessary reversals during regenerative stage changeovers.
  • FIG. 1 is a diagrammatical view of a linkage for actuating the gas reversal cocks
  • the invention embodied therein comprises a method of monitoring the reversal system of coke oven batteries wherein the various control lines for supplying various changeovers of gas flow directions are controlled by cock wrenches of plural gas reversal cocks, designated 2. These cocks are driven by linkages from a control system including a hydraulic cylinder 3 which is actuated through a line 5 in response to pressure changes which are sensed in various parts of the operating lines by pressure gauge.
  • linkage 1 is moved to the left.
  • solenoid valve 4 is reversed through the electric control, by energizing magnet 4a, and the operating fluid is discharged from cylinder 3 through line 5 and into a tank through line T.
  • a counterweight 6 is provided by which the linkage is now moved to the left, toward a corner pulley 7, to close the gas reversal cocks.
  • pressure valve 4 is reversed to relieve the pressure in the cylinder.
  • a spring buffer 9 is provided.
  • Spring 9a is biased up to the release pressure set on pressure gauge 8, so that in normal operation, buffer 9 does not move.
  • FIG. 2 shows a waste heat valve 10 and a rich gas supply duct 11 as provided in a head-heated coke oven.
  • waste heat disc 12 of valve 10 is closed and air valve 13 is opened, or conversely.
  • a coke oven battery has a plurality of these elements.
  • rich gas reversal cock 14 is open and rich gas passes through, or, vice versa, the cock is closed and conducts only degraphitizing air.
  • the temperature sensors such as thermocouplers 15,16, pick up the temperatures at the mouth of the rich gas duct 11 and in the waste heat valve 10, respectively. As long as rich gas is supplied, thermocouple 15 picks up a significantly lower temperature than if a substantially smaller amount of degraphitizing air is supplied. If air valve 13 at the waste heat valve is open, the temperature indication through thermocouple 16 is below 100° C., if waste heat disc 12 is open, the indicated temperature is above 200° C.
  • a reversal operates as follows, for example:
  • thermocouples 15 The open rich gas cocks 14 close. With a regular closing, the temperature of thermocouples 15 distinctly rises for a short period of time. This is registered in an evaluating unit 17 and the reversal operation continues. Waste heat discs 12 and air valves 13 open or close, depending on their initial position. The temperature of thermocouples 16 rises or drops abruptly. If this corresponds to the desired values, the reversal continues. One half of the reversal cocks 14 open and, with a regular opening, the temperature of thermocouple 15 drops. The heating phase starts and is continuously further monitored up to the next reversal. If a deviation occurs at any point, an alarm 21 is given and a safety action is started at 20. The measured values are processed and the desired values are set through evaluating unit 17 to which the corresponding instructions 19 are directed from a control unit 18 of the reversal system.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Coke Industry (AREA)
US06/580,790 1983-02-19 1984-02-16 Method for monitoring the reversal system of coke oven batteries Expired - Fee Related US4574034A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3305871 1983-02-19
DE19833305871 DE3305871A1 (de) 1983-02-19 1983-02-19 Verfahren zur ueberwachung der umstelleinrichtungen an verkokungsofenbatterien

Publications (1)

Publication Number Publication Date
US4574034A true US4574034A (en) 1986-03-04

Family

ID=6191345

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/580,790 Expired - Fee Related US4574034A (en) 1983-02-19 1984-02-16 Method for monitoring the reversal system of coke oven batteries

Country Status (4)

Country Link
US (1) US4574034A (cg-RX-API-DMAC10.html)
EP (1) EP0119481B1 (cg-RX-API-DMAC10.html)
JP (1) JPS59157175A (cg-RX-API-DMAC10.html)
DE (1) DE3305871A1 (cg-RX-API-DMAC10.html)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5062925A (en) * 1988-12-10 1991-11-05 Krupp Koppers Gmbh Method of reducing the nitrogen dioxide content of flue gas from a coke oven with dual heating flues by a combination of external flue gas feed back and internal flue gas recirculation
CN102582987A (zh) * 2011-12-31 2012-07-18 山西沁新能源集团股份有限公司 一种清洁型热回收焦炉焦仓物料自动监测、报警装置
CN114763478A (zh) * 2021-01-13 2022-07-19 宝山钢铁股份有限公司 焦炉加热煤气交换系统旋塞扳把断裂检测装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1597365A (en) * 1921-07-07 1926-08-24 Claire T Keigley Gas control for coke ovens
US2710281A (en) * 1950-12-22 1955-06-07 Koppers Co Inc Reversing machines for regenerative ovens
US3751342A (en) * 1970-12-30 1973-08-07 Koppers Co Inc Reversing mechanism for coke oven battery
US3833478A (en) * 1970-12-31 1974-09-03 Koppers Co Inc Reversing mechanism for coke oven battery
US3875016A (en) * 1970-10-13 1975-04-01 Otto & Co Gmbh Dr C Method and apparatus for controlling the operation of regeneratively heated coke ovens
US4085008A (en) * 1976-09-15 1978-04-18 Koppers Company, Inc. Reversing method and apparatus for the automatic heating change-over of a coke oven battery
US4306939A (en) * 1979-08-16 1981-12-22 Dr. C. Otto & Comp. G.M.B.H. Method of operating a coke oven battery

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1026233A (fr) * 1949-10-14 1953-04-24 Concordia Bergbau Ag Procédé de réalisation de traitements thermiques des gaz de distillation résultant de la cokéfaction de charbons
JPS5341179Y2 (cg-RX-API-DMAC10.html) * 1975-12-27 1978-10-04
JPS54159403A (en) * 1978-06-06 1979-12-17 Kansai Coke & Chemicals Method of exhausting coke oven combustion waste gas

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1597365A (en) * 1921-07-07 1926-08-24 Claire T Keigley Gas control for coke ovens
US2710281A (en) * 1950-12-22 1955-06-07 Koppers Co Inc Reversing machines for regenerative ovens
US3875016A (en) * 1970-10-13 1975-04-01 Otto & Co Gmbh Dr C Method and apparatus for controlling the operation of regeneratively heated coke ovens
US3751342A (en) * 1970-12-30 1973-08-07 Koppers Co Inc Reversing mechanism for coke oven battery
US3833478A (en) * 1970-12-31 1974-09-03 Koppers Co Inc Reversing mechanism for coke oven battery
US4085008A (en) * 1976-09-15 1978-04-18 Koppers Company, Inc. Reversing method and apparatus for the automatic heating change-over of a coke oven battery
US4306939A (en) * 1979-08-16 1981-12-22 Dr. C. Otto & Comp. G.M.B.H. Method of operating a coke oven battery

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5062925A (en) * 1988-12-10 1991-11-05 Krupp Koppers Gmbh Method of reducing the nitrogen dioxide content of flue gas from a coke oven with dual heating flues by a combination of external flue gas feed back and internal flue gas recirculation
CN102582987A (zh) * 2011-12-31 2012-07-18 山西沁新能源集团股份有限公司 一种清洁型热回收焦炉焦仓物料自动监测、报警装置
CN114763478A (zh) * 2021-01-13 2022-07-19 宝山钢铁股份有限公司 焦炉加热煤气交换系统旋塞扳把断裂检测装置
CN114763478B (zh) * 2021-01-13 2023-02-14 宝山钢铁股份有限公司 焦炉加热煤气交换系统旋塞扳把断裂检测装置

Also Published As

Publication number Publication date
JPS6335194B2 (cg-RX-API-DMAC10.html) 1988-07-13
EP0119481B1 (de) 1986-06-11
EP0119481A2 (de) 1984-09-26
DE3305871A1 (de) 1984-08-23
EP0119481A3 (en) 1984-12-27
JPS59157175A (ja) 1984-09-06
DE3305871C2 (cg-RX-API-DMAC10.html) 1988-12-29

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Owner name: FIRMA CARL STILL GMBH & CO., KG., RECKLINGHAUSEN,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:LEMKE, OTTO;STALHERM, DIETER;HAACK, REIMER;REEL/FRAME:004311/0378

Effective date: 19840131

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Effective date: 19940306

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Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362